Description
neoChoice sleeve stopper 30 mm ø NS 29 is a silicone laboratory stopper engineered for absolute tightness even when glass rims are imperfect. The fold-over rim design ensures a firm, secure fit on standard NS 29 ground joints, resisting accidental dislodgement during routine laboratory handling. Sampling or reagent withdrawal is performed conveniently by piercing the silicone body, preserving the seal for subsequent access without removing the stopper entirely. Offered by manufacturer neolab - Labor in the neoChoice series, these stoppers combine elasticity with good chemical resistance for reliable closure of flasks, bottles and reaction vessels. The 30 mm diameter NS 29 version is packed in units of 5 pieces, providing a practical quantity for laboratories working with larger ground-joint glassware. Ideal for preparative work, intermediate storage and multi-step syntheses, the stoppers support leak-free workflows, minimise evaporation and help protect contents from contamination in teaching, analytical and research settings.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 5 pc(s)
- Product type: Sleeve stopper
- Material: Silicone
- Diameter: 30 mm
- Joint size: NS 29
- EAN: 4058072031558
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about neoChoice folding stopper 30 mm ø NS 29 silicone VE 5 pieces
What is this article?
neoChoice folding stopper 30 mm ø NS 29 silicone VE 5 pieces is the article on this page. Luminix Health distributes neolab for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Lids & seals and Closures (other).
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
